| Countries of the World Quiz | 0 | - | 5.00 | 47,607,798 |
| Countries with the Most Tourists Quiz | 0 | - | 4.92 | 407,539 |
| Countries Whose Airlines Carried the Most Passengers | 0 | - | 4.94 | 72,629 |
| Biggest Countries by Population | 0 | - | 5.00 | 1,448,691 |
| Smallest Countries by Population and Area | 0 | - | 4.99 | 381,087 |
| Most Populous Countries with Exceptions | 0 | - | 4.98 | 122,199 |
| UNESCO World Heritage Countries | 0 | - | 4.98 | 136,189 |
| Countries with the Most Airports | 0 | - | 4.96 | 99,488 |
| Countries with the Highest Maximum Elevation | 0 | - | 4.97 | 180,866 |
| Five Countries With the Most Tourists by Continent | 0 | - | 4.95 | 122,074 |
| Landlocked Countries | 0 | - | 4.99 | 422,295 |
| Countries of Europe Quiz | 0 | - | 5.00 | 3,780,949 |
| Most Populous Countries by Year | 0 | - | 4.83 | 110,899 |
| Most Populous Countries in 2050 | 0 | - | 4.91 | 223,262 |
| Sahara Desert Countries | 0 | - | 4.98 | 164,680 |
| Himalayan Countries | 0 | - | 4.95 | 138,890 |
| Andean Countries | 0 | - | 4.93 | 84,707 |
| Countries with the Youngest Median Age | 0 | - | 4.97 | 63,905 |
| Countries in the Southern Hemisphere | 0 | - | 4.99 | 125,962 |
| Coffee Producing Countries | 0 | - | 4.83 | 67,526 |
| Countries with Shrinking Populations | 0 | - | 4.94 | 65,868 |
| Danube Countries | 0 | - | 4.97 | 72,054 |
| Countries With an "Ish" Demonym | 0 | - | 4.98 | 117,067 |
| Countries With an "Ese" Demonym | 0 | - | 4.97 | 86,463 |
| Countries with the Worst Passports | 0 | - | 4.93 | 84,370 |
| Countries with the Most Immigrants | 0 | - | 4.90 | 149,859 |
| European Landlocked Countries | 0 | - | 4.99 | 147,186 |
| Partially Recognized Countries | 0 | - | 4.98 | 106,708 |
| Countries with the Most Species | 0 | - | 4.99 | 103,271 |
| Countries 197 to 205 | 0 | - | 4.90 | 70,829 |
| Tropic of Cancer Countries | 0 | - | 4.97 | 53,613 |
| Tropic of Capricorn Countries | 0 | - | 4.96 | 47,735 |
| Countries that Use the Peso | 0 | - | 4.89 | 59,568 |
| Countries with the Largest Exclusive Economic Zone | 0 | - | 4.90 | 73,258 |
| Countries with a AAA Credit Rating | 0 | - | 4.86 | 57,705 |
| Countries in the Alps | 0 | - | 4.87 | 118,262 |
| Top Five Importing Partners by Country | 0 | - | 4.97 | 101,314 |
| Countries, Capitals, Currencies and Official Languages | 0 | - | 5.00 | 107,089 |
| Biggest Import Partners By Country | 0 | - | 4.99 | 78,689 |
| Southernmost Countries by Continent | 0 | - | 4.98 | 96,630 |
| Northernmost Countries by Continent | 0 | - | 4.98 | 116,554 |
| Countries by Population Growth, 1970–Present | 0 | - | 4.92 | 95,976 |
| Five Biggest Countries by Latitude | 0 | - | 4.97 | 100,711 |
| Five Biggest Countries by Longitude | 0 | - | 4.91 | 53,531 |
| Largest Country by Body of Water | 0 | - | 4.96 | 58,201 |
| Countries with the Most Container Port Traffic | 0 | - | 4.92 | 62,887 |
| Bridge and Tunnel Borders | 0 | - | 4.96 | 53,672 |
| Countries with the Longest Road Networks Quiz | 0 | - | 4.90 | 41,546 |
| Countries that Touch the Prime Meridian or Equator | 0 | - | 4.88 | 104,254 |
| Arctic Ocean Countries | 0 | - | 4.95 | 79,506 |
| Countries with the Most Grassland | 0 | - | 4.94 | 77,565 |
| All Countries by Area : Four at a Time | 0 | - | 5.00 | 118,976 |
| Countries with the Most Climate Zones | 0 | - | 4.96 | 68,340 |
| Countries that Host the Most Refugees | 0 | - | 4.96 | 64,180 |
| Countries of the World by Similar Area in 90 Seconds | 0 | - | 4.95 | 46,136 |
| All Countries of the World by Area with Hints | 0 | - | 4.97 | 244,099 |
| World Countries - Blind Typing | 0 | - | 5.00 | 108,216 |
| Countries in Their Own Alphabet | 0 | - | 4.95 | 48,258 |
| Largest Countries By Category | 0 | - | 4.97 | 158,270 |
| Countries by Countries | 0 | - | 4.96 | 63,268 |
| Country Flags with the Most White | 0 | - | 4.85 | 138,733 |
| Countries With the Northernmost Southernmost Point | 0 | - | 4.96 | 62,303 |
| Country Flags With Only Two Colors | 0 | - | 4.91 | 88,704 |
| Countries with the Most Billionaires | 0 | - | 4.90 | 335,995 |
| Countries with the Highest Population Density | 0 | - | 4.95 | 165,225 |
| Countries with the Lowest Population Density | 0 | - | 4.98 | 170,391 |
| Coldest Countries | 0 | - | 4.97 | 138,744 |
| Countries Reducing Carbon Dioxide Emissions the Most | 0 | - | 4.89 | 64,762 |
| Countries with the Most Millionaires | 0 | - | 4.86 | 124,021 |
| Countries with the Most Nobel Prizes | 0 | - | 4.87 | 90,653 |
| Countries with the Least Precipitation | 0 | - | 4.90 | 82,848 |
| Top 50 Countries by Population - In Order | 0 | - | 4.98 | 331,815 |
| Spanish-Speaking Countries | 0 | - | 4.95 | 375,600 |
| Island Countries | 0 | - | 4.99 | 711,157 |
| Biggest Countries by Area | 0 | - | 5.00 | 1,050,263 |
| Northernmost Countries | 0 | - | 4.99 | 362,097 |
| Countries of South America | 0 | - | 5.00 | 927,787 |
| Countries of Oceania | 0 | - | 5.00 | 1,057,543 |
| Countries of Asia Quiz | 0 | - | 5.00 | 1,878,312 |
| "Land" Countries | 0 | - | 4.98 | 337,427 |
| Most Populous Countries in 1900 | 0 | - | 4.91 | 173,932 |
| Largest Countries with Little Tourism | 0 | - | 4.70 | 61,898 |
| Countries of the World with an Empty Map | 0 | - | 5.00 | 3,384,445 |
| Countries that Catch the Most Fish | 0 | - | 4.90 | 112,675 |
| Countries with the Most Exports | 0 | - | 4.96 | 155,677 |
| Top Crude Oil Producing Countries | 0 | - | 4.89 | 190,004 |
| Countries by Oil Consumption | 0 | - | 4.96 | 120,538 |
| Largest Economies in 2050 | 0 | - | 4.90 | 111,614 |
| Richest Countries by Per-Capita GDP | 0 | - | 4.96 | 272,718 |
| Countries With Highest GDP as a Percent of Continent | 0 | - | 4.96 | 104,546 |
| Countries with the Highest GDP per Square Kilometer | 0 | - | 4.89 | 84,732 |
| UNESCO World Heritage Sites to Country | 0 | - | 4.97 | 103,231 |
| Most Visited Countries by JetPunkers | 0 | - | 4.85 | 118,617 |
| Countries More Populous Than Their Neighbors | 0 | - | 4.99 | 173,978 |
| Countries with Megacities | 0 | - | 4.99 | 264,743 |
| Countries With More than 50 Million People | 0 | - | 4.99 | 199,816 |
| Countries with the Most Population Growth by Decade | 0 | - | 4.98 | 113,515 |
| Countries With More than 200 Million People | 0 | - | 4.95 | 138,071 |
| Countries Less Populous Than Their Neighbors | 0 | - | 4.96 | 81,591 |
| Countries by Official Language | 0 | - | 4.95 | 195,313 |
| Countries with the Most Speakers of These Languages | 0 | - | 4.91 | 296,468 |
| Countries in their Native Language | 0 | - | 4.99 | 199,104 |
| Independence from Whom | 0 | - | 4.99 | 212,171 |
| Subdivisions by Country | 0 | - | 4.86 | 50,440 |
| Who Controlled These Colonies? | 0 | - | 4.88 | 132,788 |
| Megadiverse Countries | 0 | - | 4.96 | 135,045 |
| Countries With the Most English Speakers | 0 | - | 4.86 | 132,149 |
| Countries Producing the Most Sugarcane | 0 | - | 4.95 | 55,377 |
| Countries with Multiple Big Islands | 0 | - | 4.93 | 126,252 |
| Top 10 Wheat-Producing Countries | 0 | - | 4.89 | 75,119 |
| 15 Biggest Island Countries | 0 | - | 4.98 | 163,177 |
| Most Recently-Settled Countries | 0 | - | 4.94 | 62,613 |
| Countries of the World in 1938 Quiz | 0 | - | 4.95 | 94,516 |
| Countries Bigger Than Their Neighbors | 0 | - | 4.93 | 154,051 |
| Countries with Multiple Populous Islands | 0 | - | 4.89 | 95,676 |
| Countries in Relation to Cities #1 | 0 | - | 4.92 | 45,159 |
| Countries by Sports League Revenue | 0 | - | 4.94 | 77,734 |
| Landmarks of Countries #1 | 0 | - | 4.88 | 107,906 |
| Countries Furthest from the United States | 0 | - | 4.94 | 89,224 |
| Countries with the Highest HDI | 0 | - | 4.95 | 136,985 |
| Straight Shot to the Arctic Circle | 0 | - | 4.88 | 75,372 |
| Most Dispersed Island Nations | 0 | - | 4.97 | 71,512 |
| Countries of the World in Alphabetical Order | 0 | - | 5.00 | 111,277 |
| World Map Quiz | 0 | - | 4.81 | 65,140 |
| Smallest Countries with at Least One Border | 0 | - | 4.87 | 107,381 |
| Southernmost Countries of the World | 0 | - | 4.99 | 228,149 |
| Countries by Inland Surface Water | 0 | - | 4.93 | 105,314 |
| Top 20 Motor Vehicle Producing Countries | 0 | - | 4.91 | 123,025 |
| Countries With the Most Languages | 0 | - | 4.90 | 202,289 |
| Countries with the Highest Population Under Age 15 | 0 | - | 4.95 | 110,924 |
| Countries with the Highest Population 65 and Older | 0 | - | 4.90 | 94,040 |
| Countries with the Most Prisoners | 0 | - | 4.94 | 99,323 |
| Countries with the Most Domestic Camels | 0 | - | 4.94 | 61,459 |
| Tallest Countries North to South | 0 | - | 4.83 | 120,594 |
| Widest Countries East to West | 0 | - | 4.92 | 129,678 |
| Countries with the Highest Average Elevation | 0 | - | 4.98 | 71,464 |
| Largest Countries by Area or Population | 0 | - | 5.00 | 186,420 |
| Countries with the Most Area in the Southern Hemisphere | 0 | - | 4.99 | 98,132 |
| Most Populous Countries as a Percent of Their Continent | 0 | - | 4.97 | 94,789 |
| Largest Countries as a Percent of Continent | 0 | - | 4.97 | 148,625 |
| Countries with the Most Desert | 0 | - | 4.93 | 127,898 |
| Countries by Contribution to UN Budget | 0 | - | 4.87 | 77,384 |
| Countries with Most Nobel Laureates per Capita | 0 | - | 4.83 | 34,805 |
| Countries with Double Letters | 0 | - | 4.96 | 96,293 |
| Countries that End in N | 0 | - | 4.95 | 171,180 |
| Countries with Five Letters | 0 | - | 4.96 | 282,595 |
| Countries with Six Letters | 0 | - | 4.94 | 213,620 |
| Countries with W | 0 | - | 4.97 | 160,372 |
| Countries with Z | 0 | - | 4.98 | 291,529 |
| Countries with Letters Missing | 0 | - | 4.96 | 186,747 |
| Countries That End in U | 0 | - | 4.95 | 120,869 |
| Top 20 Longest One-Word Country Names | 0 | - | 4.98 | 134,505 |
| Countries that End in O | 0 | - | 4.92 | 159,525 |
| Countries that End in R | 0 | - | 4.87 | 118,977 |
| Country Names Created by Only 4 Letters | 0 | - | 4.99 | 155,743 |
| Countries Ending in "IA" | 0 | - | 4.99 | 209,151 |
| Countries by First and Last Letter #1 | 0 | - | 4.97 | 170,719 |
| Countries by Last Two Letters | 0 | - | 4.85 | 135,491 |
| Countries by First and Last Letter #2 | 0 | - | 4.96 | 142,414 |
| Countries That End in Y | 0 | - | 4.91 | 185,890 |
| Countries Based on First Two Letters #1 | 0 | - | 4.99 | 197,958 |
| Countries with Cardinal Directions in Their Names | 0 | - | 4.92 | 152,882 |
| Countries that End in I | 0 | - | 4.94 | 135,110 |
| Countries Based on First Two Letters #2 | 0 | - | 4.99 | 184,142 |
| Countries by Initial Letter and Length #1 | 0 | - | 4.98 | 95,831 |
| Countries That End in NIA | 0 | - | 4.92 | 109,800 |
| Countries That End in BIA | 0 | - | 4.93 | 149,231 |
| Countries by Initial Letter and Continent #1 | 0 | - | 4.94 | 167,136 |
| Countries Whose Names Start with Saint | 0 | - | 4.87 | 119,447 |
| Countries That End in RIA | 0 | - | 4.93 | 126,819 |
| Most Common Words in Official Country Names | 0 | - | 4.86 | 111,036 |
| Divided Country Name Puzzle #1 | 0 | - | 4.99 | 227,687 |
| Divided Country Name Puzzle #2 | 0 | - | 4.99 | 133,736 |
| Divided Country Name Puzzle #3 | 0 | - | 4.92 | 126,161 |
| Groups of Countries that Start with the Same 3 Letters | 0 | - | 5.00 | 91,721 |
| Add A Letter - Make a Country | 0 | - | 4.82 | 74,587 |
| Countries With One Word and Three A's | 0 | - | 4.92 | 53,047 |
| Countries with a Unique Last Letter | 0 | - | 4.90 | 103,450 |
| Unique Starting Letter - Countries by Continent | 0 | - | 4.98 | 125,543 |
| Countries that are Free from U.S.A. | 0 | - | 4.89 | 49,434 |
| Countries Containing Two or More Words | 0 | - | 4.97 | 54,004 |
| Countries that End in L | 0 | - | 4.94 | 156,856 |
| "Stan" Countries Quiz | 0 | - | 4.97 | 215,893 |
| Countries Ending with "An", but not "Stan" | 0 | - | 4.98 | 85,273 |
| City to Country Quiz #1 | 0 | - | 4.97 | 156,037 |
| City to Country Quiz #3 | 0 | - | 4.88 | 118,966 |
| 45 European Countries, 45 Cities | 0 | - | 4.95 | 79,017 |
| Five Biggest Countries by Continent | 0 | - | 4.99 | 249,795 |
| Five Poorest Countries by Continent | 0 | - | 4.93 | 200,687 |
| Five Least Populated Countries by Continent | 0 | - | 4.95 | 143,093 |
| Five Smallest Countries by Continent | 0 | - | 4.98 | 163,754 |
| First Five Countries Alphabetically by Continent | 0 | - | 4.94 | 225,491 |
| Last Five Countries Alphabetically by Continent | 0 | - | 4.98 | 152,888 |
| Five Northernmost Capital Cities by Continent | 0 | - | 4.89 | 71,112 |
| Top 10 Countries in Nuclear Power Production | 0 | - | 4.95 | 86,713 |
| 10 Northernmost Countries That Start with S | 0 | - | 4.94 | 62,890 |
| One Border Countries | 0 | - | 4.98 | 470,033 |
| Countries by Borders in 90 Seconds | 0 | - | 4.99 | 3,835,924 |
| Countries by First Two Letters in 90 Seconds | 0 | - | 4.98 | 5,633,973 |
| Countries with the Most Tourists Per Capita | 0 | - | 4.28 | 82,146 |
